Options and Variety in Games. Numerous game variations, such as deals rummy, pool rummy, and points rummy, should be available in a decent rummy app. This gives players the aviator promo codeoption to enjoy a variety of game styles and transition to a new version for a change of pace. User Interface and Multiplayer Functionality. To ensure a smooth gaming experience, the app should have an easy-to-use & intuitive interface. Plus, it should have multiplayer options so that users can compete with friends or other players worldwide.